>>95991059
With that said, if you're seriously writing a matriarchal species that sort of works like a mammal so they're somewhat close to humans (If you want something that isn't, go ahead, basing this off something like birds would be far simpler from what little I know about birds :c )

Please, for the love of god, do not take too many aspects from polygynous cultures, I have a feeling a lot of elements from these could fall downstream from this, and flipping the aspect of which sex is in the harem isn't going to work, which gets right over to my second point.

Please do not try to portray polyandry and polygyny as the same. These are two strategies that pose very different ideas, seeing as how one is resulting in more children, while the other is you trying to pool resources INTO one child.

There's probably a reason it's rarer, since the two reasons for it would be:

A: The female needs additional males to help raise children, which the males benefit from, or at the very least, do not suffer TOO much from. (To be fair, your females are still the gatekeepers, so males do basically have to deal with it, and the females who would be doing this are likely the 'best' ones, so there's that.)

B: Resources are limited, and so the species is better off with just one female doing the reproductive work (Who would want to write about molerat people though?)

If you wish to have polyandry, which is likely in some form, then it's probably going to be fair to keep in the mind those are going to be small harems, and so it's better to think of this as a nuclear family with additional fathers, as weird as that is.

(I'm sorry, I just hate it whenever these systems are portrayed as direct equivalents in stories with matriarchies.)